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Table 2 The relationship between maternal vitamin D intake and status with self-reported asthma at 5-years

From: Atopic heredity modifies the association between maternal vitamin D status in pregnancy and the risk of atopic disease in childhood: an observational study

  No reported atopic heredity Reported atopic heredity
OR 95% CI P-value OR 95% CI P-value
T3 dietary vitamin D intake (µg/day) 0.925 0.775–1.105 0.389 0.936 0.740–1.184 0.582
Supplemental vitamin D intake in T1 and/or T3 (yes) 1.095 0.567–2.114 0.787 0.739 0.284–1.920 0.535
T1 25OHD (nmol/L) 1.015 0.999–1.030 0.070 0.981 0.956–1.008 0.116
T1 25OHD (nmol/L)       
   > 75 (ref) 1.0    1.0   
   < 50 0.385 0.135–1.099 0.074 0.907 0.155–5.287 0.913
  50–75 0.271 0.127–0.580 0.001 1.368 0.519–3.606 0.526
T3 25OHD (nmol/L) 1.014 1.002–1.026 0.022 0.994 0.975–1.014 0.567
T3 25OHD (nmol/L)       
   > 75 (ref) 1.0    1.0   
   < 50 0.455 0.097–2.137 0.318 0.502 0.056–4.502 0.538
  50–75 0.579 0.262–1.279 0.177 1.218 0.450–3.295 0.698
  1. T1 early pregnancy, T3 late pregnancy, 25OHD 25-hydroxyvitamin D, OR Odds ratio, CI Confidence interval, ref reference category
  2. Adjusted for maternal BMI in T1, level of education (university level, yes/no), ethnicity (northern Europe, yes/no), delivery mode (vaginal or Caesarean section) and tobacco use by either mother or other caregiver during pregnancy